.form-container {
    width: 400px;
    margin: 50px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.form-group {
    margin-bottom: 15px;
}
input {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
    box-sizing: border-box;
}
button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}
button:hover {
    background-color: #45a049;
}
.code-button {
    width: 120px !important;
    margin-left: 10px;
    font-size: 14px;
}
.phone-input {
    width: calc(100% - 130px) !important;
    display: inline-block;
}
.nav-links {
    text-align: center;
    margin-top: 20px;
}
.nav-links a {
    color: #4CAF50;
    text-decoration: none;
    margin: 0 10px;
} 